Bohn LO070 Service Manual
Replaces 412.0, May 2004
LOAIRE® UNIT COOLERS
Technical Guide
Models LO | Air Defrost • LOD | Electric Defrost • LOG | Hot Gas Defrost
BNLFTB
May 2008
www.thecoldstandard.com
Table of Contents
Nomenclature .........................................................................................................................................................................................................2
Features & Benets ...............................................................................................................................................................................................
Performance Data
All Defrost Types ............................................................................................................................................................................................ 4
Specications
Air Defrost ........................................................................................................................................................................................................5
Electric Defrost ...............................................................................................................................................................................................5
Hot Gas Defrost .............................................................................................................................................................................................. 5
Dimensional Data ..................................................................................................................................................................................................6
Replacement Parts by InterLink™ ....................................................................................................................................................................6
Physical Data ...........................................................................................................................................................................................................7
Standard Nozzle Selection .................................................................................................................................................................................
We have made a commitment to customer needs, innovation and environmental stewardship and have dedicated
ourselves to delivering energy-ecient choices. PSC and EC motors will reduce costs, improve the bottom line and
enhance equipment performance and service life.
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Choose the most energy-ecient motor available for evaporators.
The EC motor is an Energy Solutions® option on new Bohn Lo-Aire®
evaporators. Available on all new equipment or as an easy-to-install,
drop-in replacement aftermarket part from InterLink™ Commercial
Refrigeration Parts. Because they’re a drop-in replacement for existing
shaded pole and PSC motors, installation is quick and easy. It’s a high
impact, quick payback solution for reducing costs and achieving green
initiatives without replacing the entire system.
EC motors by InterLink are up to 75% ecient - that’s a 51-59% increase
over shaded pole motors and a 30-35% increase over permanent-split
capacitor (PSC) motors. With all of this added eciency, you can count
on more energy savings and lower operational costs while taking a
step in the right direction toward conserving our planet’s resources.
To learn more about EC motors, visit www.interlinkparts.com/ec.
Nomenclature
LO 070 A E
Model Series Capacity Electrical Code Design Revision
LO = Bohn Lo-Aire, air defrost
LOD = Bohn Lo-Aire, electric defrost
LOG = Bohn Lo-Aire, hot gas defrost
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# x 100 = BTUH A = 115/1/60
B = 208-230/1/60
AH = 115/1/60 (PSC)
BH = 208-230/1/60 (PSC)
MH = 460/1/60 (PSC)
AE = 115/1/60 (EC)
BE = 208-230/1/60 (EC)
©2008 Heatcraft Refrigeration Products LLC
Features & Benefits
Lo-Aire® unit coolers are ideal for meat storage and preparation rooms, oral coolers, dough retarding and many other
applications requiring low air velocities and low sound levels. With low velocity unit coolers, high humidities can be maintained
to prevent product drying and weight loss. These units are ideal for any type of workroom where human comfort is important.
Cabinet
Rust-free, all-aluminum white case with louvered intake grille for attractive appearance
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Statically and dynamically balanced fans are designed for quiet air movement
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All factory installed electrical components are wired to a terminal board in the junction box making eld wiring quick
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and easy
Inlet connection allows for external mounting of TXV
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Coil
Sweat-type cooling coil connections reduce the potential for leaks
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Nickel-steel alloy heaters provide a positive defrost and have long life
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Electric defrost coils have a hermetically sealed defrost termination thermostat that does not require adjustment. Hot gas
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defrost units come with an adjustable defrost termination thermostat
Cross-n cooling coils with corrugated aluminum ns spaced 6 FPI & 3/8" OD staggered copper tubes provide optimum
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heat transfer and reduce the amount of refrigerant required
Generous coil surface helps to maintain steady room temperature and minimize product shrinkage
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Access port on the suction connection allows superheat to be easily and accurately set
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Drain Pan
Hot gas models use inner drain pans with low-wattage electric heaters. This eliminates the braze joints and tubing
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associated with hot gas drain pan loops
All models use inner drain pans to reduce sweating
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Motors
Motors are factory-wired to unit junction box for fast installation
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Thermal overload protected motors are resiliently mounted inside the unit to assure minimum noise level
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High eciency PSC motors are optional on sizes 070 through 165. PSC motors are standard on sizes 189 through 266
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EC Motors (optional) available factory-installed or as a drop-in replacement through InterLink™ Commercial Refrigeration
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Parts in 115/1/60 and 208-230/1/60
Options
Units available with copper fins. Air defrost units also available with polyester coated fins or various coil coatings options•
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